You’ll see tons of wrenches that are insulated by coating the handle, but to meet the 1000V ATSM standard rating, Klein does something a little different: they embed two ratcheting box end wrenches in see-through plastic so you can visually confirm they aren’t touching. Grab one end of the wrench and there’s no path for the current to flow to the other.
Made in the USA, Klein’s Lineman’s insulating box wrench features 9/16″ and 3/4″ ratcheting 12-point sockets. There’s no reversing mechanism; to switch from tightening to loosening, just flip the wrench over. They mold grooves into the handle so you can get a good grip of the wrench.
It’ll be interesting to see if they come out with similar insulated wrenches in other sizes. For now, you can purchase one of these insulated wrenches for $44, except the Klein Connection says you must order this wrench in multiples of three.
Insulating Box Wrench [Klein Connection]